Clamping cylinder



FIG. 1 is a front left side isometric view of a clamping cylinder in accordance with the new design;

FIG. 2 is a left side isometric view thereof, a right side isometric view being a mirror image thereof;

FIG. 3 is a left side bottom isometric view thereof;

FIG. 4 is a right side top view thereof;

FIG. 5 is a front isometric view thereof; and,

FIG. 6 is a rear isometric view thereof.

The broken lines shown in FIGS. 5 and 6 are directed to portions of the clamping cylinder that depict unclaimed environmental subject matter. 

CLAIM The ornamental design for a clamping cylinder, as shown and described. 